Sansa Fuze Firmware Update

I know this makes no logical sense, but take out any microSD, make sure all of your own content is backed up somewhere, and run Settings/System Settings/Format. 

Two or three times in the last 2 1/2 years, I had the microSD slot crash my Fuze, and formatting fixed it.

You’ll have to reload whatever content you had on the internal memory, but I don’t think it has anything to do with the content itself. Just some weird deep bug somewhere.